The story about the precedent that established freedom of the airwaves is kind of interesting.

A frugal farmer (don't want to get off thread) whose place was located under a high tension line decided to light his barn by erecting a fence around the barnyard. It was a wire fence made with one long piece of wire like a coil. He ran the ends into his barn and ran the lights from the electricity collected by induction from the high tension lines. The power company saw his new lights and sued him for stealing their electricity. But the court found in the farmer's favor because the electricity had already leaked out of the lines and was going to waste anyway.